Harnessing Path Optimization to Enhance the Strength of Three-Dimensional (3D) Printed Concrete

Jiang, Xiongzhi; Li, Yujia; Yang, Zhe; Li, Yangbo; Xiong, Bobo

doi:10.3390/buildings14020455

Cited by 3 publications

(1 citation statement)

References 40 publications

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“…Compressive and flexural strength [36,37] Mortar's rheology and particle-size-dependent yield stress [38,39] are fundamental parameters that directly influence the mortar extrudability and the integrity of the bottom layers to meet stack layer-by-layer requirements and a large height-to-weight ratio typical of 3DCP of buildings [40][41][42][43]. Each layer must be able to support the weight of the subsequent ones so there are no cracks or collapse of the element.…”

Section: Mechanical Strengthmentioning

confidence: 99%

Building a Greener Future: Advancing Concrete Production Sustainability and the Thermal Properties of 3D-Printed Mortars

Capêto,

Jesus,

Uribe

et al. 2024

Buildings

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The integration of waste materials in extrudable cement mixtures has the potential to make the construction industry more sustainable by reducing carbon footprints and developing eco-friendly materials. This along with advancements in 3D concrete printing (3DCP) provides engineering and architectural benefits by reducing material waste and costs. In this paper, the impact of waste incorporation on properties of mortar and concrete is examined. The use of waste materials, such as pumice, coal slag, agricultural lignocellulosic residues, and recycled rubber tyres, to improve thermal insulation and durability of cementitious composites is discussed. In addition, the incorporation of air-entraining admixtures with surfactant activity is explored for their indirect effect on thermal behaviour, pore size reduction, and enhancement in concrete properties. This review includes important topics such as a strength resistance to freezing and thawing, fire resistance, plasticising effect, and delay in cement hydration. These findings highlight the benefits of using diverse waste materials in construction, providing a multidimensional approach to waste management, cost optimization, and enhanced construction materials in the context of 3DCP.

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Section: Mechanical Strengthmentioning

confidence: 99%

Building a Greener Future: Advancing Concrete Production Sustainability and the Thermal Properties of 3D-Printed Mortars

Capêto,

Jesus,

Uribe

et al. 2024

Buildings

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Differences between 3D printed concrete and 3D printing reinforced concrete technologies: a review

Momeni,

Vatin,

Hematibahar

et al. 2025

Front. Built Environ.

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This review aims to provide a comprehensive analysis of the difference between 3D printed concrete (3DPC) and 3D printing reinforced concrete (3DPRC) technologies, as well as potential future paths for these technologies based on current consolidated approaches. Although 3D printed reinforced concrete technology attempts to strengthen reinforced concrete using 3D printing technologies with polymer ingredients, 3D printed concrete technology concentrates on printing concrete for building concrete structures. In recent years, both technologies have advanced rapidly and become a global research innovation hotspot due to their advantages over traditional construction technology, such as high building efficiency, low labor costs, and less construction waste. Unfortunately, there are several issues with 3DPC and 3DPRC technologies, including competing rheological requirements, integrating hurdles, inadequate interlayer bonding, and anisotropic properties of the material that result in lacking structural performance. The findings of the investigation discuss research gaps and theoretical possibilities for future development in both 3D printing technologies, which can advance concrete technology and safeguard structures under various loads. In the present study, two distinct 3D printing technologies are analyzed, along with their respective uses in material and structural engineering. Additionally, the advantages, methods, and materials utilized for the two types of 3D printing technology are described, and the difficulties and solutions associated with using 3D printed concrete in real-world projects are demonstrated. None of the earlier investigations examined the differences between these two technologies. Although 3DPRC technologies aim to strengthen concrete by incorporating various forms of 3D printed technology, 3DPC technology has been studied for its mechanical qualities and concrete rheology. Meanwhile, engineers in 3D printed concrete technologies try to improve large-scale 3D printers and the mechanical properties of printed concrete, while 3D printing reinforced concrete engineers try to design new patterns of 3D reinforcing patterns due to the improved mechanical properties of concrete. The present study examines the differences between 3DPC and 3DPRC technologies.

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Research on Mechanical Properties of a 3D Concrete Printing Component-Optimized Path by Multimodal Analysis

Wang,

Yang,

Liu

et al. 2024

Sustainability

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Three-dimensional concrete printing (3DCP) technology with solid wastes has significant potential for sustainable construction. However, the hardened mechanical properties of components manufactured using 3DCP technology are affected by weak interlayer interfaces, limiting the widespread application of 3DCP technology. To address the inherent limitations of 3DCP technology, conventional improvement strategies, such as external reinforcement and the optimization of material properties, lead to increased production costs, complex fabrication, and decreased automation. This study proposes an innovative spatial path optimization method to enhance the mechanical performance of 3D-printed, cement-based components. The novel S-path design introduces additional printed layers in the weak interlayer regions of the printed samples. This design improves the spatial distribution of fiber-reinforced filaments in continuous weak zones, thus enhancing the functional efficiency of fibers. This approach improves the mechanical performance of the printed samples, achieving compressive strengths close to those of cast samples and only a 20% reduction in average flexural strength. Compared to using a conventional printing path, the average compressive strength and flexural strength are improved by 30% and 55%, respectively, when the S-path layout is employed in 3DCP. Additionally, this method significantly reduces the anisotropy in compressive and flexural strengths to 26% and 28% of samples using conventional printing paths, respectively. Therefore, the proposed method can improve the mechanical properties and stability of the material, reducing the safety risks of printed structures.

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Harnessing Path Optimization to Enhance the Strength of Three-Dimensional (3D) Printed Concrete

Cited by 3 publications

References 40 publications

Building a Greener Future: Advancing Concrete Production Sustainability and the Thermal Properties of 3D-Printed Mortars

Building a Greener Future: Advancing Concrete Production Sustainability and the Thermal Properties of 3D-Printed Mortars

Differences between 3D printed concrete and 3D printing reinforced concrete technologies: a review

Research on Mechanical Properties of a 3D Concrete Printing Component-Optimized Path by Multimodal Analysis

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